Methods 3 communities from Wuhou District were chosen at random and the teeth wedge-shaped defects of the aged were investigated.
方法随机抽取的成都市武侯区三个居（家）委会的老年人楔状缺损进行调查、分析。
Methods 3 communities from Wuhou District were chosen at random and the teeth wedge-shaped defects of the aged were investigated.
方法随机抽取的成都市武侯区三个居（家）委会的老年人楔状缺损进行调查、分析。
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